Unreal Engine Issues
Unreal Engine Issues
Cannot set array elements from an array that is contained within a struct
UE - Gameplay - Blueprint - Aug 26, 2015Cannot set array elements from an array that is contained within a struct User Description: Setup: Array of structures "StructureA". In StructureA, array of integers/strings/whatever. Result: Can' ...
UMG widget callbacks do not set PIE context in editor
UE - Editor - UI Systems - May 21, 2018This is from a UDN post. Several gameplay functions, such as level streaming and SoftObjectPtr resolution, depend on the GPlayInEditorID being set when that code is executed in PIE in the editor. T ...
ISequencer::OnPlayEvent does NOT fire at the end of playback in Sequencer editor
UE - Anim - Sequencer - Jul 8, 2022ISequencer :: OnStopEvent is executed when pause, but not when playing to the last frame and stopping automatically. This is because OnStopDelegate.Broadcast(); is only in FSequencer::Pause(). When ...
Destructible created in PhysXlabs will clear materials when a chunk parameter is selected
UE - Simulation - Physics - Destruction - Dec 30, 2014DESCRIPTION: The materials are cleared from a destructible that is created in PhysX Labs when a chunk in any of the depths is selected and if any of the chunk parameters are set to true. ATTACHED: ...
Precomputed lighting is not saved when using Save As or Duplicate for levels
UE - Graphics Features - Sep 30, 2016Lighting is invalidated with levels that have been duplicated or Saved As. The maps that are created are immediately marked dirty and need to be resaved vs how they were in 4.12.5 where they wouldn' ...
When loading a new level, a variable of the subclass of type is reset to null in the classes inherited from UGameInstance or UGameInstanceSubsystem
UE - Foundation - Data Pipeline - Cooker - Dec 1, 2022Reproduced 3/3 times, issue does not occur in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression. It's only in packaged & quick launched builds that this occurs; PIE works as normal. ...
Adjusting transform of a mesh with LODs causes LODs to flicker
UE - World Creation - Worldbuilding Tools - Foliage - Jun 3, 2015If a hierarchical instanced static mesh has LODs and is scaled in a blueprint, the mesh will rapidly switch between LODs, causing a flickering effect. Note: This only seems to occur if the camera ...
Client movement and animation are heavy jittered on listen server
UE - Gameplay - Player Movement - May 10, 2019The listen server will see jitter in clients character movement and animations. This is hard to notice without the "slomo" command but is extremely obvious using "slomo". Clients will see server and ...
Landscapes cause Vulkan crash related to GRHISupportsAttachmentVariableRateShading
UE - Rendering Architecture - RHI - Nov 7, 2022Binary (Installed Build)//UE5/Release-5.1 @CL22986940 I encountered this same crash when creating a landscape twice, but was not able to consistently reproduce it with those steps. I figured out th ...
EditInlineNew specifier for UClasses causes issues with the editor UI
Tools - Dec 10, 2015When a class uses the EditInlineNew specifier, the resulting class has some errors when interacting with the editor. 1. Unable to assign existing blueprints based off the class to an array of that ...